I’m using LwIP 1.3.1, but I’m guessing
this part hasn’t changed much.
So say my tcp_recv() callback gives me three pbufs
chained: A->B->C. If I need to save some of the data for
later, what’s the intended mechanism for freeing A but not B->C? Seems
like could be accomplished either by pbuf_ref(B) and then pbuf_free(A) --OR-- pbuf_dechain(A)
followed by pbuf_free(A). Is that correct? Is either method *more*
correct (i.e. always better), do both methods have their own advantages?
On a related note, if I don’t want to tcp_recv() any
more data until processing the data in B->C, can I just postpone calling